I stumbled across this while surfing. The visual says it all.
Quick fix to turn a PC into a Mac by ALLY on FEBRUARY 5, 2010 Now this is a mod job that’s bound to stump even the best modders out there. Turning an ordinary laptop into a Mac is tricky business. Thankfully it seems that someone has mastered the task. All you’ll need is some boxing tape and an apple. I don’t think it actually matters as far as the color of the apple goes. You should probably take a bite out of it just for the sake of authenticity though. Source: Gearfuse
link: Foolish Gadgets – Part 2